groundless Definition

unfounded, baseless, unwarranted, unsupported, idle, untrue, ungrounded, unsubstantiated, unjustified, frivolous, unreasonable, false, irrational, substantiated, unjustifiable, unnecessary, merit, untenable, invalid, incorrect, flimsy, substantiation, unsound, indefensible, misplaced, unproven, unprovoked, flawed, gratuitous, undue, rationale, pious, founded, basis, foundation, bedrock, base, ill-founded, well-founded, fallacious, absurd, slanderous, specious, unsupportable, illogical, preposterous, meritless, ludicrous, erroneous, unprovable, spurious, ridiculous, nonsensical, untruthful, disingenuous, implausible, inaccurate, irresponsible, unscientific, unproved, unrealistic, unfair, bogus, unverifiable, scurrilous, defamatory, uncorroborated, unjust, overblown, exaggerated, unobjective, ipsedixitism, unconstructive, counterproductive, untruism, inadmissible, laughable, uncredible, contrary, calumnious, unverified, unacceptable, anticonstitutional, inapplicable, unmeritorious, misrepresentative, outrageous, brigandish, misleading, unwise, irrelevant, alarmist, unreasoned, wrongheaded, worthless, unhelpful, useless, unpersuasive, factual, unfeasible,